CVE-2026-12939

Published: Lug 29, 2026 Last Modified: Lug 29, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,4
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: changed
Confidentiality: low
Integrity: low
Availability: none

Description

AI Translation Available

The Newsletters Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'link' attribute of the post_thumbnail (and newsletters_post_thumbnail) shortcodes in versions up to and including 4.15. This is due to insufficient input sanitization and output escaping in the post_thumbnail() method in helpers/shortcode.php, which concatenates the user-controlled $link shortcode attribute directly into an href attribute without esc_url() or esc_attr(). This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0021
Percentile
0,1th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control Confidentiality Integrity Availability
Potential Impacts:
Bypass Protection Mechanism Read Application Data Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies: AI/ML, Web Based, Web Server
Likelihood of Exploit: High
View CWE Details
https://plugins.trac.wordpress.org/browser/newsletters-lite…
https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.15/helpers/s…
https://plugins.trac.wordpress.org/browser/newsletters-lite…
https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.15/helpers/s…
https://plugins.trac.wordpress.org/browser/newsletters-lite…
https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.15/helpers/s…
https://plugins.trac.wordpress.org/browser/newsletters-lite…
https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.15/includes/…
https://plugins.trac.wordpress.org/changeset?reponame=&old=…
https://plugins.trac.wordpress.org/changeset?reponame=&old=3621582%40newsletter…
https://www.wordfence.com/threat-intel/vulnerabilities/id/2…
https://www.wordfence.com/threat-intel/vulnerabilities/id/2ca8ab94-45b8-4705-b2…